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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. When are dairy cattle dehorned?






2. (LH) stimulates the Leydig cells to produce testosterone






3. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






4. 26 hours after estrus begins






5. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






6. 30-38 hours after estrus cycle begins






7. Urinary calculi.






8. (male) pushes the testes upward toward the body for warmth or protection






9. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






10. 2 month growth cycle. stored in the epididymis of the bull






11. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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12. 19-23 (21) days






13. Animals which have only one estrous cycle (ex: dog - fox)






14. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






15. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






16. Microscopic - make sure not sterile - very few bulls are actually tested






17. (LH) causes female's egg to break (her period)






18. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






19. Duct through penis that carries sperm and urine






20. 265-285 days






21. Why Dairy calves are fed powdered milk.






22. 1-3 days






23. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






24. 114 days






25. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






26. Not under a timeline - cow can not be sold as steak






27. Allows extension of penis without fibro-elastic penis






28. Animal which has been castrated after puberty






29. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






30. Prevent the cow from getting an infection from the calve






31. 19-23 (21) days






32. Birthing process (termination of gestation)






33. (switzerland) 2nd in size and milk production - most muscle -






34. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






35. 16-20 hours






36. Sperm production






37. Urinary calculi.






38. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






39. Way to know everything is alright with the breeding male






40. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






41. Prevent the cow from getting an infection from the calve






42. Luteolysis happens because of the ____________ hormone






43. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






44. (FSH) causes egg to mature in females






45. ~305 days (altough often longer due to breeding difficulties)






46. Contains and regulates the temp of the testes for sperm production






47. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






48. Birthing process (termination of gestation)






49. 26 hours after estrus begins






50. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






Can you answer 50 questions in 15 minutes?



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